Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN

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Point Forecast Matrices
National Weather Service Morristown TN
340 AM EDT Sat Apr 21 2018

TNZ017-212115-
Tri Cities Airport-Sullivan TN
36.50N  82.41W Elev. 1536 ft
340 AM EDT Sat Apr 21 2018

Date             Sat 04/21/18            Sun 04/22/18            Mon 04/23/18
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      70          42          69          45          62
Temp          37 34 53 64 69 63 55 49 46 43 57 65 68 65 57 52 49 46 54 59 61 58
Dewpt         27 29 31 35 37 38 38 37 38 38 39 40 40 40 41 40 41 40 43 45 46 45
RH            67 82 43 34 31 39 53 63 73 82 51 40 36 40 55 63 74 79 66 60 58 62
Wind Dir       E  E SE  S  W  N  E SE SE SE SE SE SE SE SE  E  E  E  E  E  E  E
Wind Spd       3  3  3  3  2  2  3  4  4  3  4  5  6  8  6  6  8  5 10 12 14 14
Clouds        CL CL CL CL FW FW SC SC SC SC B1 B2 B2 OV OV OV OV OV OV OV OV OV
PoP 12hr                      0           0           5          30          70
QPF 12hr                      0           0           0        0.02        0.29
Rain shwrs                                            S  S  C  C  C  C  L  L  C
Frost          Y  Y


Date          Tue 04/24/18  Wed 04/25/18  Thu 04/26/18  Fri 04/27/18
EDT 6hrly     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          47    68      50    68      49    65      45    66
Temp          51 48 65 64   55 51 65 64   54 50 63 60   50 46 62 59
Dewpt         45 46 47 51   50 49 51 51   49 47 48 47   46 44 46 45
PWind Dir         E     E      SE    SW       W     W      SW    SW
Wind Char        GN    GN      LT    LT      LT    GN      GN    GN
Avg Clouds    OV B2 OV B2   OV OV OV B2   B2 B2 B2 B1   B1 B1 B2 B2
PoP 12hr         50    50      50    50      50    50      20    50
Rain shwrs     C  C  C  C    C  C  C  C    C  C  C  C    S  S  C  C

$$

TNZ071-212115-
Knoxville McGhee Tyson Airport-Blount TN
35.80N  83.98W Elev. 979 ft
340 AM EDT Sat Apr 21 2018

Date             Sat 04/21/18            Sun 04/22/18            Mon 04/23/18
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      72          47          67          51          64
Temp          44 41 57 67 71 66 58 54 50 48 58 64 66 64 58 55 53 51 58 62 64 61
Dewpt         34 34 36 39 41 43 42 42 41 42 44 47 47 47 48 47 48 47 49 49 50 49
RH            68 76 45 36 34 43 55 64 71 80 59 54 50 54 69 74 83 86 72 62 60 65
Wind Dir      NE  E NE  N NE NE  E SE  E  E  E  E  E  E  E NE NE NE  E  E  E NE
Wind Spd       3  2  2  2  3  3  3  3  2  1  2  4  5  8  9 11  9 11 12 12 10  9
Clouds        CL CL CL FW FW FW SC SC B1 B2 B2 OV OV OV OV OV OV OV OV OV B2 OV
PoP 12hr                      0           0          30          70          70
QPF 12hr                      0           0        0.10        0.23        0.42
Rain shwrs                                S  S  C  C  C  C  L  L  L  L  L  L  L
Tstms                                                             C  C  C  C


Date          Tue 04/24/18  Wed 04/25/18  Thu 04/26/18  Fri 04/27/18
EDT 6hrly     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          51    68      54    68      50    67      48    67
Temp          55 52 66 65   58 55 66 64   55 51 64 62   53 49 64 61
Dewpt         49 50 52 54   53 52 53 52   49 48 48 49   47 46 47 46
PWind Dir        NE    NE      NW     W       W     W      SW    SW
Wind Char        GN    LT      LT    LT      LT    GN      GN    GN
Avg Clouds    OV OV OV B2   B2 B2 B2 B2   B2 B2 B2 B1   SC B1 B1 B1
PoP 12hr         60    60      50    40      50    40      20    50
Rain shwrs     L  L  L  L    C  C  C  C    C  C  C  C    S  S  C  C

$$

TNZ036-212115-
Oak Ridge-Anderson TN
36.00N  84.24W Elev. 913 ft
340 AM EDT Sat Apr 21 2018

Date             Sat 04/21/18            Sun 04/22/18            Mon 04/23/18
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      72          47          66          51          63
Temp          45 41 57 67 71 66 58 54 50 48 57 63 65 63 58 55 53 52 58 61 63 60
Dewpt         30 31 34 38 40 41 43 44 43 43 44 46 47 48 48 47 49 49 49 50 50 50
RH            55 67 42 34 32 40 57 69 77 83 62 54 52 58 69 74 86 89 72 67 62 69
Wind Dir      NE NE  E  S  E  E  E  E NE NE  E  E  E  E  E  E  E  E  E  E  E  E
Wind Spd       3  3  1  2  2  2  1  1  1  2  2  4  5  8  5  4  6  8  6  5  5  4
Clouds        CL CL FW FW FW SC SC SC B1 B2 B2 OV OV OV OV OV OV OV OV OV OV OV
PoP 12hr                      0           5          30          70          70
QPF 12hr                      0           0        0.15        0.19        0.56
Rain shwrs                                S  S  C  C  C  C  L  L  L  L  L  L  L


Date          Tue 04/24/18  Wed 04/25/18  Thu 04/26/18  Fri 04/27/18
EDT 6hrly     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          52    69      53    68      49    67      48    67
Temp          55 53 66 65   57 54 66 64   54 50 64 62   53 49 64 61
Dewpt         49 50 53 54   52 52 53 51   49 47 48 48   47 47 46 42
PWind Dir        NE    NE      NW     W       W     W      SW     W
Wind Char        LT    LT      LT    LT      LT    LT      LT    GN
Avg Clouds    OV OV OV OV   OV B2 B2 B2   B2 B2 B2 B1   SC B1 B1 B1
PoP 12hr         60    60      40    40      50    40      20    50
Rain shwrs     L  L  L  L    C  C  C  C    C  C  C  C    S  S  C  C

$$

TNZ099-212115-
Chattanooga Airport-Hamilton TN
35.03N  85.22W Elev. 688 ft
340 AM EDT Sat Apr 21 2018

Date             Sat 04/21/18            Sun 04/22/18            Mon 04/23/18
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      73          50          63          53          66
Temp          45 43 59 68 72 67 60 56 53 51 57 61 63 61 58 56 55 54 60 64 66 63
Dewpt         39 39 38 37 39 41 42 44 44 44 47 50 50 49 50 50 50 50 51 52 53 53
RH            79 86 45 32 30 39 51 64 71 77 69 67 62 65 75 80 83 86 72 65 63 70
Wind Dir      NE NE SE SE SE SE SE SE SE SE  E  E  E  E NE  E  E  E  E  E  E  E
Wind Spd       2  2  6  9  6  4  3  4  4  4  6  9 10 11 11  9 13 10 12 11 10  9
Clouds        CL CL CL FW FW FW SC B2 B2 OV OV OV OV OV OV OV OV OV OV OV OV OV
PoP 12hr                      0          20          80          90          70
QPF 12hr                      0        0.01        0.52        0.61        0.60
Rain shwrs                          S  S  L  L  D  D  D  D  D  D  L  L  L  L  L
Tstms                                                             C  C  C  C


Date          Tue 04/24/18  Wed 04/25/18  Thu 04/26/18  Fri 04/27/18
EDT 6hrly     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          54    69      54    69      50    68      49    69
Temp          57 55 67 65   58 54 67 64   55 51 65 63   54 50 66 63
Dewpt         52 52 54 55   52 51 51 51   49 46 47 48   47 47 46 45
PWind Dir         E     N      NW    NW      NW     W       W     W
Wind Char        GN    LT      LT    LT      LT    GN      LT    GN
Avg Clouds    OV OV OV OV   B2 B2 B2 B2   B2 B2 B1 SC   SC B1 B1 B1
PoP 12hr         70    50      40    30      20    30      20    50
Rain shwrs     L  L  C  C    C  C  C  C    S  S  C  C    S  S  C  C

$$

NCZ060-212115-
Tusquitee RAWS-Forestry-Cherokee NC
35.07N  84.12W Elev. 1600 ft
340 AM EDT Sat Apr 21 2018

Date             Sat 04/21/18            Sun 04/22/18            Mon 04/23/18
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      70          45          62          51          64
Temp          39 40 56 65 69 64 56 52 48 46 54 59 61 60 56 54 52 51 58 62 64 61
Dewpt         35 35 36 36 38 40 39 39 40 42 43 44 45 45 49 48 49 49 49 49 50 50
RH            85 82 47 34 32 41 53 61 74 86 66 57 56 58 77 80 89 93 72 62 60 67
Min/Max RH                   32          86          53          93          60
Wind Dir       E SE SE SE SE SE SE SE SE SE SE SE  E  E  E  E  E SE SE SE SE SE
Wind Dir Deg  11 12 13 14 15 15 14 12 12 12 12 12 11 11  9 10 10 12 12 12 12 12
Wind Spd       3  4  6  6  5  5  5  6  8  8  9  9 11 12 10 13 13 13 13 10 11 10
Clouds        CL CL CL CL FW FW SC B1 B2 B2 OV OV OV OV OV OV OV OV OV OV B2 OV
Clouds (%)     0  0  0  5 14 18 40 58 70 82 91 99 99 99 99100100100 91 92 75 91
Vsby          10 10 10 10 10 10 10 10
PoP 12hr                      0           5          70          90          80
QPF 12hr                      0           0        0.11        0.52        0.30
Rain shwrs                                C  C  L  L  D  D  D  D  D  D  L  L  L
Tstms                                                             C  C  C  C
Haines                        5                       2
LAL               1     1     1     1     1     1     1     1     3     3     3
Max Mix Hgt                5400                    3800
AGL Mix Hgt                3700                    2200
Max Vent Rt               38200                   44600
T Wind Dir                   SE                      SE
T Wind Spd                   10                      20
ADI                          33                      39
Max LVORI                     3                       4
Stability         G     B     B     E     D     D     D     D     D     C     C
Ceiling        NONE  NONE  NONE 20800 18200  6300  5500  4000  3200  4000  4700
Sta Pres      28.21 28.20 28.16 28.17 28.14 28.13 28.06 27.96 27.97 27.97 27.90


Date          Tue 04/24/18  Wed 04/25/18  Thu 04/26/18  Fri 04/27/18
EDT 6hrly     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          51    68      52    67      46    67      44    67
Temp          54 52 65 64   56 53 65 62   52 47 63 61   50 45 63 60
Dewpt         50 50 52 54   52 51 50 50   48 46 46 46   46 45 44 42
PWind Dir        SE    SE       N    NW      NW    NW       W     W
Wind Char        GN    LT      LT    LT      LT    LT      LT    GN
Avg Clouds    OV B2 B2 OV   B2 B2 B2 B2   B2 B2 B2 B1   SC B1 B1 B1
PoP 12hr         60    70      40    30      40    40      10    50
Rain shwrs     L  L  L  L    C  C  C  C    C  C  C  C          C  C

This is an experimental product for planning and review purposes only, and is
not to be substituted for an official fire weather spot forecast

$$



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